Handling apparatus for mill rolls

ABSTRACT

A roll-handling device for suspension from and operation by the hook of a crane hoist comprising a frame having a pair of horizontal arcuately shaped plates for supporting engagement with a circumferentially extending rib on an assembly of a bearing chock and a mill roll. Lateral movement of the assembly out of engagement with the supporting plates is prevented by a holding member in the form of a ring which is mounted on the frame for movement to an operative holding position in which it encircles the roll neck and is moved to such position by a linkage system that is operated in response to upward movement of the frame to engage said plates with said supporting rib.

United States Patent IHI 3, 5

[72] inventor John A. Gnosko 3,208,260 9/!965 Sieger et al. 72/239Whitaker, Pa. 3,323,345 6/1967 Lyle et al. 72/239 [21] Appl. No 746,6593,425,256 2/! 969 McGoogan et all 72/239 [22] Filed July 22, i968 tPaemed y 1971 :nmary lzxalrnlilner-gR shard J. Herbst (73] AssigneeUnited States Steel Corporation omey I Dung {54] F gg i ygg FOR MILLROLLS ABSTRACT: A roll-handling device for suspension from and wing igs.

operation by the hook of a crane hoist compnsmg a frame 72/239, having apair of horizontal arcuately shaped plates for sup- 29i/ 104 portingengagement with a circumferentially extending rib on [I31- an of abearing chock and a {OIL Lateral mov- Field of Search 72/237- ment ofthe assembly out of engagement with the supporting 2381391261341 294/1041 10 plates is prevented by a holding member in the form ofa ringReerences Cited which is mounted on the frame for movement to anoperative holding position in which it encircles the roll neck and isUNnED STATES PATENTS moved to such position by a linkage system that isoperated in 2,473,410 6/1949 Bevevino 294/104 response to upwardmovement of the frame to engage said 2,752,804 7/1956 Kaiberkamp 72/239plates with said supporting rib.

PATENTEUJULZOIQYI $593,555

4, SHEET 1 UF 4 [NI/EN TOR. JOHN A. EROS/(0 Ar rorney HANDLING APPARATUSFOR MILL ROLLS This invention relates to roll stands for slabbing millsand, more particularly, to a device for handling .mill rolls, such asvertical edging rolls, during removal and replacement in a mill orstorage rack.

In slabbing mills, edging rolls are customarily provided between thehorizontal roll stands to control the width of the slab. The edgingrolls extend vertically and their removal and replacement both in themill and in storage racks have involved difficult and time-consumingoperations. For this purpose, the roll neck at the upper end of eachroll is customarily provided with four tapped holes so that a liftingplate with an eyelet for engagement by the hook of a crane hoist may beattached thereto when handling of the roll is required for removal orreplacement of the roll in the mill or a storage stand. This operationhad to be performed manually and was both difficult and hazardous forthe roll handler who had to climb to the top of the roll in order toattach and remove the lifting plate.

One of the principal objects of this invention is to provide aroll-handling device which eliminates the need for the customary liftingplate and the manual operations required for its attachment and removalwith respect to the upper end of the roll neck.

Another object of the invention is to provide a roll-handling devicewhich may be suspended from a crane hoist hook and operated by the millcrane to engage and support a vertical edging roll and bearing chockassembly during the handling required to effect its removal andreplacement in a roll stand or storage rack.

A further object is to provide a roll-handling device of the characterdescribed in which movement thereof by the hook of a crane hoist iseffective to move it into operative supporting engagement with the rollassembly. A related object isto provide such device with means operativein response to its movement into supporting engagement with the rollassembly for holding the roll assembly against lateral movement from aposition supported thereon.

Other objects and advantages of the invention will become apparent fromthe following description.

In the drawings, there is shown a preferred embodiment of the invention.In this showing:

FIG. 1 is a side elevational view of a roll-handling device constructedin accordance with the principles of this invention and shown suspendedfrom the hook of a crane hoist;

FIG. 2 is a side elevational view similar to FIG. 1 in which the movableparts thereof are shown in their operative rollhandling positionsrelative to the roll neck and bearing chock of a vertical edging rollassembly, which is shown somewhat diagrammatically;

FIG. 3 is a view of the roll-handling" device looking irl-a directionfrom the right of FIG. 2;

FIG. 4 is a top plan view of the roll-handling device shown in thepreceding figures;

FIG. 5 is a sectional view on a larger scale taken along the line V-V ofFIG. 3;

FIG. 6 is a sectional view taken along line VIVI of FIG. 5; and

FIG. 7 is a sectional view on a still larger scale taken along lineVII-VII of FIG. 6.

As shown in the drawings, the roll-handling device of this inventioncomprises a frame F that is fabricated from steel plate by welding. Atits upper end the frame has a bail B for suspension from the hook H of acrane hoist and, at its lower end, has a pair of laterally spacedmembers S that respectively have arcuately shaped edges on which anassembly including a vertical edging roll and its bearing chocks issupported for movement by the mill crane from one position to another.In a manner to be described, a ring R is supported on the frame F formovement to and from an operative position in which it holds the rollassembly against lateral movement from its supported position on themembers S.

In FIG. 2 of the drawings, the housing 1 of a bearing chock for avertical edging roll and a roll neck 2 projecting upwardly therefrom areillustrated somewhat diagrammatically in broken lines. As shown in thisfigure, the supporting plates S have supporting engagement. witharcuateportions of a circumferentially extending rib 3 that is spaced axiallybelow the upper end 4 of the roll neck. The rib 3 forms part of thehousing 1 and is otherwise employed to support the roll assembly in aroll storage rack (not shown). In its operative position, the ring Rencircles the upper end 4 of the roll neck 2 and operates to hold theroll assembly against lateral movement with respect to the supportingplates S.

The frame F comprises a horizontal top plate 5, a pair of verticalsideplates 6, and a vertical back plate 7 extending between thesideplates 6. The supporting members S are welded as spandrels in thecorners between the lower ends of the sideplates 6 and. the back plate7. The upper ends of the plates 6 and 7 abut against the under surface 8of the top plate The bail B comprises a pair of parallel plates 9 whichextend upwardly from the frame top plate 5 and form a support for a pin10 extending transversely therebetween. The pin 10 forms a bail forengagement by the hook H'of the crane hoist'asv shown in the drawings.Gussets ll reinforce the vertical positions of the plates 9 on thehorizontal plate 5.

The inwardly facing edges 12 of the supporting plates S, as viewed inFIG. 6, are arcuately shaped for supporting engagement with the circularbearing chock rib 3, which has its bottom surface undercut to provideadownwardly opening recess 13 that is spaced inwardly from a ledge orhook 14 (FIG. 7) extending circumferentially around the periphery of therib 3. For hooking engagement with the rib 3, the edges 12 of thesupporting members S are machined to provide an upwardly projectingridge 15 which have hooking engagement in the rib recesses 13. Themachining operation that forms the ridge [5 also provides an upwardlyfacing recess 16 spaced radially inwardly from the ridge 15 in which theledge or hook 14 at the outer edge of the rib 3 has hookingv engagement.When the bearing chock housing 1 is supported on the members S, theparts 13-16 have hooking engagement with each other, as shown in FIG. 7of the drawings, and operate to prevent lateral movement of the rollassembly out of supporting engagement with the members S.

The two members S have their adjacent edges 17 spaced from each other toprovide an opening 18 therebetween for a purpose to be described. Thearcuate length of edges 12 on the members S including the space betweentheir edges 17 is less than to provide for engagement of the edges12with the roll assembly in a manner to be described.

A lever 19 providesa mounting for movement of the holding ring R to andfrom its operative holding position in which it is arranged in ahorizontal plane and encircles the upper end 4 of the roll neck 2 asviewed in FIG. 5 of the drawings. The lever 19 extends through anopening 20 in the frame back plate 7 and has one end 21 thereofsupported for pivotal movement on a pin 22 which has its opposite endssupported by a pair of parallel bars 23 that are welded in verticalparallel positions to the back plate 7. The bars 23 extend from thebottom surface 8 of the top plate 5 to the lower surfaces 24 of thesupporting members S. The mounting of the ring R on the lever 19 isformed by a pair of bars 25 that have their inner ends 26 welded to theopposite sides of the lever l9 and their outer ends 27 welded to theupper surface of the ring R. The connection of the ring R with the lever19 is completed by a welded connection with the underlying arcuateportion 28 of the ring R as viewed in FIG. 6. When the lever 19 istilted to the inclined position, illustrated in broken lines as viewedin FIG. 5, the outer end 29 of the ring R is positioned above'the upperend of the roll neck 4 so that the frame F may be moved by the cranehoist to the left as viewed in FIG. 5 to a position in which the arcuateedges 12 of the supporting members 8 are positioned under the bearingchock housing rib 3 for supporting engagement therewith. After movementof the. frame to this position, and upon elevation thereof to engage themembers S with the rib 3, the lever 19 is pivoted downwardly to move theholding ring R to its operative horizontal position about the upper end4 of the roll neck. A linkage system L is provided for effectingmovement of the ring R in this manner.

The linkage system L comprises a vertical bar 30 that is arrangedcentrally with respect to the facing edges 31 of the side bars 23. Theupper end of the bar 30 is connected by a pivot pin 32 with a pair ofspaced lugs 33 projecting outwardly from the end 21 of the lever 19.Movement of the bar 30 is biased downwardly by a pair of springs 34which respectively engage with the outer ends of a horizontal bar 35that has a welded connection at a central point thereof with the upperend of the bar 30. The upper ends of the springs 34 bear against theadjusting devices 36, which are carried by a plate 37 welded to theframe top plate and may be operated to adjust the biasing tension of thesprings 34. The lower end 38 of the link 30 is connected by a pivot pin39 with a pair of lugs 40 projecting rearwardly from a control lever 41that is pivotally supported at a point centrally thereof by a pivot pin42 extending between the spaced bars 23. The opposite end 43 of thelever 41 is undercut and is adapted to engage the rib 3 of the bearingchock housing for a purpose to be described. When the frame F is freelysuspended from a crane hook H as shown in H0. 1, the springs 34 bias themovement of the link 30 downwardly to move the ring R and the lever 41to the tilted position in which the end of the lever 19 abuts againstthe under surface 8 of the plate 5 as shown in broken lines in H6. 5.

A conically shaped roll centering and locking member 45 is provided tosupplement the holding action of the ring R. The member 45 is secured tothe underside of the lever 19 in a position extending downwardlytherefrom and centered with respect to the ring R. When the lever 19pivots downwardly, the member 45 enters the milled out conical opening46 customarily provided in the roll neck to provide for centering theroll in a lathe. it helps tocenter the roll assembly in the frame F inaddition to holding it against lateral movement with respect thereto.

After suspension on a crane hook, the roll-handling device of thisinvention may be moved by the crane operator to engage and lift a rollassembly. This is accomplished by moving the frame F to the positionshown in FIG. 5 of the drawings in which the arcuate edges 12 of itssupporting members S engage with the cylindrical surface 44 of theportion of the bearing chock housing under rib 3. The hook H is thenelevated by the crane operator to move the supporting members S upwardlyinto engagement with the rib 3, and to place the parts l3-l6 in hookingengagement with each other as described above. As this upward movementof the frame F takes place, the end 43 of the operating lever 41 engagesthe rib 3 and pivots in a counterclockwise direction, as viewed in FIG.5, to move the link 30 upwardly against the action of the biasingsprings 34. This movement of the link 30 in turn pivots the lever 19downwardly to move the ring R to its operative horizontal positionencircling the upper end 4 of the roll neck 2. In this position of thering R, the roll neck 2 is held against lateral movement, and the parts13-16 are thus held against relative movement out of hooking engagementwith each other as shown in FIG. 7 of the drawings. Attention isparticularly directed to the fact that operation of the roll-handlingdevice of this invention to lift and transport a vertical edging roll iseffected entirely by the operator of the mill crane, and that therequired operations for this purpose as described above can be performedwithout the necessity of manually attaching a lifting plate and eyeletto the upper end of the roll neck.

Although the above discloses a preferred embodiment for handling edgingrolls in slabbing mills, it will be understood that the liftingapparatus of this invention is applicable for handling other rolls, andthat other adaptations and modifications may be made without departingfrom the scope of the appended claims.

I claim: 1. A handling device for a vertical roll of the type having anposition in holding engagement with said roll neck, said roll neckhaving a conically shaped recess in its said upper end and said holdingmember comprising a conically shaped member movable to and from aposition seated in said rollneck recess.

2. ln apparatus for handling a vertical bearing chock and roll assemblyfor an edge-rolling stand in a slabbing mill, said assembly being of thetype having an upwardly projecting roll neck and a circumferentiallyextending rib below the upper end of said roll neck, the combinationcomprising a supporting frame, a pair of laterally spaced supportingmembers at the base of said frame, each of said members having a curvededge for supporting engagement under said rib, a ring adapted to occupyan operative position arranged concentrically about said roll neck forholding said assembly against movement out of a position supported onsaid frame with said rib engaged with said curved edges, means mountingsaid ring for movement on said frame from an inoperative position abovethe end of said roll neck downwardly to its said operative position,means for moving said frame upwardly to engage said curved edges withsaid rib, and means responsive to said upward movement of said frame forlowering said holding ring from its said inoperative position to itssaid operative position.

3. In apparatus for handling a vertical bearing chock and roll assemblyfor an edge-rolling stand in a slabbing mill, said assembly being of thetype having an upwardly projecting roll neck and a circumferentiallyextending rib below the upper end of said roll neck, the combinationcomprising a supporting frame, a supporting member at the base of saidframe and having a curved edge for supporting engagement under said rib,a ring adapted to occupy an operative position arranged concentricallyabout said roll neck for holding said assembly against movement out of aposition supported on said frame with said rib engaged with said curvededge, means mounting said ring for movement on said frame from aninoperative position above the end of said roll neck downwardly to itssaid operative position, means for moving said frame upwardly to engagesaid curved edge with said rib, and means responsive to said upwardmovement of said frame for lowering said holding ring from its saidinoperative position to its said operative position.

4. A roll-handling device as defined in claim 1 characterized by saidframe being adapted for upward movement by a crane hook to engage saidbase member with said rib, and means responsive to upward movement ofsaid base member into supporting engagement with said rib for movingsaid holding member to its said operative roll neck encircling position.

5. Handling apparatus as defined in claim 2 characterized by saidframe-moving means comprising a bail at the upper I end of said framefor suspension on the hook of a crane hoist.

6. Handling apparatus as defined in claim 2 characterized by saidring-lowering means comprising a lever pivoted on said frame andprojecting through the space between said supporting members forengaging said rib upon upward movement of said frame relative thereto,and a linkage system operated by said lever for actuating saidring-mounting means to lower said ring to its said operative position,said ring-mounting means including an arm pivotally supported on saidframe and means securing said ring to said arm for pivotal movementtherewith.

7. Handling apparatus as defined in claim 6 characterized by meansbiasing said linkage system for movement of said ring to its saidinoperative position.

1. A handling device for a vertical roll of the type having an upwardlyprojecting roll neck and a circumferentially extending and downwardlyfacing rib spaced axially below the upper end of said roll neckcomprising, a base member for supporting engagement with said rib, aframe extending upwardly from said base member, a member supported onsaid frame for holding engagement with said roll neck to restrain saidroll against lateral movement and disengagement of said rib with saidsupporting member, and means mounting said holding member on said framefor movement to and from an operative position in holding engagementwith said roll neck, said roll neck having a conically shaped recess inits said upper end and said holding member comprising a conically shapedmember movable to and from a position seated in said roll neck recess.2. In apparatus for handling a vertical bearing chock and roll assemblyfor an edge-rolling stand in a slabbing mill, said assembly being of thetype having an upwardly projecting roll neck and a circumferentiallyextending rib below the upper end of said roll neck, the combinationcomprising a supporting frame, a pair of laterally spaced supportingmembers at the base of said frame, each of said members having a curvededge for supporting engagement under said rib, a ring adapted to occupyan operative position arranged concentrically about said roll neck forholding said assembly against movement out of a position supported onsaid frame with said rib engaged with said curved edges, means mountingsaid ring for movement on said frame from an inoperative position abovethe end of said roll neck downwardly to its said operative position,means for moving said frame upwardly to engage said curved edges withsaid rib, and means responsive to said upward movement of said frame forlowering said holding ring from its said inoperative position to itssaid operative position.
 3. In apparatus for handling a vertical bearingchock and roll assembly for an edge-rolling stand in a slabbing mill,said assembly being of the type having an upwardly projecting roll neckand a circumferentially extending rib below the upper end of said rollneck, the combination comprising a supporting frame, a supporting meMberat the base of said frame and having a curved edge for supportingengagement under said rib, a ring adapted to occupy an operativeposition arranged concentrically about said roll neck for holding saidassembly against movement out of a position supported on said frame withsaid rib engaged with said curved edge, means mounting said ring formovement on said frame from an inoperative position above the end ofsaid roll neck downwardly to its said operative position, means formoving said frame upwardly to engage said curved edge with said rib, andmeans responsive to said upward movement of said frame for lowering saidholding ring from its said inoperative position to its said operativeposition.
 4. A roll-handling device as defined in claim 1 characterizedby said frame being adapted for upward movement by a crane hook toengage said base member with said rib, and means responsive to upwardmovement of said base member into supporting engagement with said ribfor moving said holding member to its said operative roll neckencircling position.
 5. Handling apparatus as defined in claim 2characterized by said frame-moving means comprising a bail at the upperend of said frame for suspension on the hook of a crane hoist. 6.Handling apparatus as defined in claim 2 characterized by saidring-lowering means comprising a lever pivoted on said frame andprojecting through the space between said supporting members forengaging said rib upon upward movement of said frame relative thereto,and a linkage system operated by said lever for actuating saidring-mounting means to lower said ring to its said operative position,said ring-mounting means including an arm pivotally supported on saidframe and means securing said ring to said arm for pivotal movementtherewith.
 7. Handling apparatus as defined in claim 6 characterized bymeans biasing said linkage system for movement of said ring to its saidinoperative position.